Table of Contents
Jack patterns
A jack repeats note starts in the same column at short intervals. In the diagram, every tap returns to column 2.
| Availability | Native Mania 4K and 7K style selection |
|---|---|
| Documentation status | Current heuristic; illustration is schematic |
| Behavior reference | v6.6.16 · reviewed 2026-09-28 |
Read the example
Open the diagram to view the full-size image. These are original timelines, not screenshots of a real map. Column numbers are not keyboard bindings. The example is illustrative rather than a test of the entire-chart classifier.
What the analyzer measures
The analyzer examines consecutive starts within each column, their short intervals, the share of participating notes, and repeated-note runs. Notes in other columns can coexist with a jack run.
Choose this preference
.style jack .jack
Use either form as an active player. The shared room’s future selections use the preference; already visible queue entries stay in place. Use .style or .map to inspect the current Mania chart and .pool for active filters.
Limitations
A fast single-note sequence can contribute to both Jack and Stream scores in the broad v1 classifier. A Jack label is not a promise that the entire chart stays in one column.
When strict fresh choices run out, style fallback can broaden the selection while keeping the active eligibility boundaries. Expanded spelling aliases are supported in the confirmed live v6.6.17 release.